S3 Bucket Operations:List Bucket Objects

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List Bucket Objects


Returns a list of (up to 1000) objects in a bucket. Query parameters can be used to return a portion of the objects in a bucket. The result is sorted alphabetically.

URL Format

Host Style: http://bucketname.ns1.emc.com/
Path Style: http://ns1.emc.com/bucketname

Request Headers

x-amz-date optionalThe timestamp of the request added by the requester. Example: Tue, 03 Sept 2013 12:00:00 GMT. If the Authorization header is specified, you must specify either the x-amz-date or the Date header. If both the headers are specified, the value of x-amz-date header is chosen.
Authorization requiredInformation needed to authenticate requests.


The following conditions must be met in order to call this operation.

  • The user must have READ access to the bucket

  • BaseUrl used in a host-style URL should be pre-configured using the ECS Management API or the ECS Portal (for example, emc.com in URL: bucketname.ns1.emc.com)

  • Namespace corresponding to this bucket should exist (for example, ns1).

Response Body

Field Description Type Notes
<Name> Name of the bucket String
<Prefix> Keys beginning with the indicated prefix. String
<Marker> Indicates where to begin listing keys from in the bucket. String
<NextMarker> The marker to use in order to request the next page of results - only populated if the isTruncated member indicates that this object listing is truncated String
<MaxKeys> The maximum number of keys that will be returned in the response. Integer
<Delimiter> This causes the keys containing the same string between the prefix and the first occurrence of the delimiter to be collectively placed into a single result element in CommonPrefixes. Each collection of result counts as only one return against the MaxKeys value String
<IsTruncated> Indicates whether all of the objects in the bucket, matching the search criteria, were returned or not. Boolean Valid Values:
  •  Boolean value : true or false
<ServerSideEncryptionEnabled> D@RE Indicates whether the bucket is set for server side encryption. Boolean Valid Values:
  •  Boolean value : true or false
<Encoding-Type> If ?encoding-type:url was used in a bucket listing, that option must be reflected in the response body String
<Contents>     0-* Elements
<Key> The key of the object String
<LastModified> The date on which the object was last modified. Date
<ETag> The entity tag is an MD5 hash of the object. The ETag only indicates the changes to an object String
<Size> The size of the object in bytes Long
<StorageClass> Storage class String Valid Values:
<ID> The ID of the bucket owner String
<DisplayName> Screen name of the owner of the bucket. String
<CommonPrefixes>     0-* Elements
<Prefix> If the request does not include the prefix parameter then this shows only the substring of the key before the first occurrence of the delimiter If the request includes the prefix parameter then this shows the substring of the key from the beginning of the prefix to the first occurrence of the delimiter String